r/musictheory is a subreddit with 717k members. The community frequently discusses looking for, struggling, hard time, ear training, and chords, and they frequently recommend/review music theory book, notation software, and theory books, and the most common flair used is general question, notation question, songwriting question, and discussion.
/r/musictheory is a community for the discussion of music theory and related topics. Since they are not well-covered in other subreddits, questions and discussions about Notation/Engraving are also welcome.
Popular Topics in r/musictheory
#1
Looking For
41 posts
#2
Struggling
30 posts
#3
Hard Time
8 posts
#4
Ear Training
6 posts
#5
Chords
5 posts
#6
Songwriting
3 posts
#7
Music
3 posts
#8
Key
3 posts
#9
Melody
3 posts
#10
Rhythm
3 posts
Products Discussed in r/musictheory
Music Theory Book
136 reviews
#1
Tonal Harmony
4.5★ from 4 reviews
#2
Arnold Schoenberg
4.3★ from 4 reviews
#3
Vincent Persichetti
4.3★ from 3 reviews
Notation Software
48 reviews
#1
MuseScore
4.3★ from 11 reviews
#2
Finale
3.1★ from 7 reviews
#3
Sibelius
3.7★ from 7 reviews
Theory Books
46 reviews
#1
W.A. Mathieu
5.0★ from 2 reviews
#2
Mark Levine
5.0★ from 2 reviews
#3
Adler
5.0★ from 1 review
Flair Used in r/musictheory
#1
General Question
: "Everybody knows when the key change goes up. Songs when it goes down?"
107 posts
#2
Notation Question
: "Does Dominant 9 chord has a flat 7?"
21 posts
#3
Songwriting Question
: "Pentatonic composition"
18 posts
#4
Discussion
: "apparently, GPT-6 can do perfect OMR"
14 posts
Member Growth in r/musictheory
Yearly
+66k members(10.1%)
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Last updated: September 14, 2026